mirror of
https://github.com/emqx/neuron.git
synced 2026-10-20 07:21:35 +08:00
fengzero
e09963911d
sort modbus point for optimizing read efficiency read modbus point(coil, input, hold reg, input reg) write modbus point(coil, hold reg)
132 lines
4.0 KiB
C
132 lines
4.0 KiB
C
/**
|
|
* NEURON IIoT System for Industry 4.0
|
|
* Copyright (C) 2020-2021 EMQ Technologies Co., Ltd All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 3 of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
**/
|
|
|
|
#ifndef _NEU_MODBUS_H_
|
|
#define _NEU_MODBUS_H_
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <sys/queue.h>
|
|
|
|
typedef enum modbus_function {
|
|
MODBUS_READ_COIL = 0x1, // bit
|
|
MODBUS_READ_INPUT_CONTACT = 0x02, // bit
|
|
MODBUS_READ_HOLD_REG = 0x03, // word
|
|
MODBUS_READ_INPUT_REG = 0x04, // word
|
|
MODBUS_WRITE_S_COIL = 0x05, // bit
|
|
MODBUS_WRITE_S_HOLD_REG = 0x06, // word
|
|
MODBUS_WRITE_M_HOLD_REG = 0x10, // bit
|
|
MODBUS_WRITE_M_COIL = 0x0F // word
|
|
} modbus_function_e;
|
|
|
|
typedef enum modbus_area {
|
|
MODBUS_AREA_COIL = 0,
|
|
MODBUS_AREA_INPUT = 1,
|
|
MODBUS_AREA_INPUT_REGISTER = 3,
|
|
MODBUS_AREA_HOLD_REGISTER = 4,
|
|
} modbus_area_e;
|
|
|
|
typedef enum modbus_endian {
|
|
MODBUS_ENDIAN_UNDEFINE = -1,
|
|
MODBUS_ENDIAN_BIG4321 = 0,
|
|
MODBUS_ENDIAN_BIG3412 = 1,
|
|
MODBUS_ENDIAN_LITTLE1234 = 2,
|
|
MODBUS_ENDIAN_LITTLE2143 = 3
|
|
} modbus_endian_e;
|
|
|
|
struct modbus_header {
|
|
uint16_t process_no;
|
|
uint16_t flag;
|
|
uint16_t len;
|
|
} __attribute__((packed));
|
|
|
|
struct modbus_code {
|
|
uint8_t device_address;
|
|
uint8_t function_code;
|
|
} __attribute__((packed));
|
|
|
|
struct modbus_pdu_read_request {
|
|
uint16_t start_addr;
|
|
uint16_t n_reg;
|
|
} __attribute__((packed));
|
|
|
|
struct modbus_pdu_read_response {
|
|
uint8_t n_byte;
|
|
uint8_t byte[];
|
|
} __attribute__((packed));
|
|
|
|
struct modbus_pdu_s_write_request {
|
|
uint16_t start_addr;
|
|
uint16_t value;
|
|
} __attribute__((packed));
|
|
|
|
struct modbus_pdu_m_write_request {
|
|
uint16_t start_addr;
|
|
uint16_t n_reg;
|
|
uint8_t n_byte;
|
|
uint8_t byte[];
|
|
} __attribute__((packed));
|
|
|
|
struct modbus_pdu_write_response {
|
|
uint16_t start_addr;
|
|
uint16_t n_reg;
|
|
} __attribute__((packed));
|
|
|
|
typedef enum modbus_data_type {
|
|
MODBUS_B8 = 1,
|
|
MODBUS_B16 = 2,
|
|
MODBUS_B32 = 4,
|
|
} modbus_data_type_t;
|
|
|
|
typedef struct modbus_data {
|
|
enum modbus_data_type type;
|
|
union {
|
|
uint8_t val_u8;
|
|
uint16_t val_u16;
|
|
uint32_t val_u32;
|
|
float val_f32;
|
|
} val;
|
|
modbus_endian_e endian;
|
|
} modbus_data_t;
|
|
|
|
int modbus_read_req_with_head(char *buf, uint16_t id, uint8_t device,
|
|
modbus_function_e function_code, uint16_t addr,
|
|
uint16_t n_reg);
|
|
|
|
int modbus_read_req(char *buf, uint8_t device_address,
|
|
modbus_function_e function_code, uint16_t addr,
|
|
uint16_t n_reg);
|
|
|
|
int modbus_s_write_req_with_head(char *buf, uint8_t device_address,
|
|
modbus_function_e function_code, uint16_t addr,
|
|
uint16_t value);
|
|
|
|
int modbus_s_write_req(char *buf, uint8_t device_address,
|
|
modbus_function_e function_code, uint16_t addr,
|
|
uint16_t value);
|
|
|
|
int modbus_m_write_req_with_head(char *buf, uint8_t device_address,
|
|
modbus_function_e function_code, uint16_t addr,
|
|
uint16_t n_reg, struct modbus_data *mdata);
|
|
|
|
int modbus_m_write_req(char *buf, uint8_t device_address,
|
|
modbus_function_e function_code, uint16_t addr,
|
|
uint16_t n_reg, struct modbus_data *mdata);
|
|
|
|
#endif |